D blind fastener



y 1 UNITED STATES;

PATENT OFFICE.

WILLIAM E. ARNOLD AND HOPART ARNOLD, ()F ROCHESER, NEYV YORK.

IMPROVED SASH A';ND BLIND FASTENER.

Specification forming part of Letters fPatent No. 33,423, dated October S, 1861.

To all whom it may concern:

Be it known that we, WILLIAM E. ARNOLD and HOBART G. ARNOLD, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in a Combined Fastener and Look for Sash and Blinds, of which the followingisa full and exact description, reference being had to the accompanying drawings, making part of the specification,and to theletters of reference marked thereon, the same letters referring to like parts in all the drawings.

In the drawings, Figure 1 is a perspective view of the lock. Fig. 2 is an inside or back view of the box, showing a plan of it. Fig. 3 is the same with bolt B and slide Carranged for left hand. The shortest cog or cam on the slide connects with the bolt, so as to hold it from being easily moved inward and upward. Fig. 4: Here the longest cog or cam on the slide C connects with the bolt B, so as to allow a free movement of the bolt inwardly from a pressure on the outer end. Here also the slide C extends below the box for purposes hereinafter described. Figs. 5 and 6 are the same as Figs. 3 and 4 reversed. Fig. 7: Here the sliding back partly covers the box, bolt B, and slide C, and in connection with Fig. 8 is intended to show the principle of locking and unlocking the fastener. Figs. 9 and 10 are the same as Figs. 7 and 8 reversed. Figs. 11 and 11 and 12 and 12 show the bolt B and slide 0 in plan and cross-sections. Figs. 13, 14:, 15, 16, and 17 show plans of the sliding back with corresponding numbers of keys belonging to them.

The nature of our invention consists in so constructing and arranging a sliding back to a box with abolt or slide, or both, as to form a combined fastener and look without necessarily complicating the .forms by the latter, while the latter requires only the particular key belonging to it to form a convenient, safe, and reliable lock, the security being increased by the great variety of keys, their perfect adaptation, and the peculiar construction of the openings or forms in the sliding backs, which are made to receive them; also, in constructing and arranging an adjustable slide with a cog or cam on each edge, one longer than the other, so as at pleasure to have it hold the bolt B firmly when down or let it be easily pressed inward and upward. To do this we construct a box, as shown in Figs. 1 and 2, a bolt, as shown in Figs. 11 and 11, a slide, as shown in Figs. 12 and 12, andput them together, as shown in Figs. 3i and 4. It will be seen that the slides C in these two drawings are reversed. The shortest cog or cam D in Fig.3 connects with the bolt, the

lower edge being a little below the opening in fectly free, except the weight of the slide, and

is easily pressed inward. This arrangement is in most cases particularly desirable for sash which riseand lower. In Fig. 4 the slide is reversed, and the longest cog or cam E connects with the bolt B, but does not leave the opening when fully down. Consequently a slight pressure on the end of the bolt B will move it inward. The arrangement last described is sometimes very important when used t'or blinds or swinging sash, and there are some instances when it is needed for sash which rise and lower.

Having described the workingparts of the fastener, we will now add the back, and here, instead of a stationary one, we will insert a sliding back, as shown in Fig. 7, letter L. The sliding back is here moved forward to the front edge of the box, and the small nibs in the ack of the slide C and bolt B are in the straight grooves M and N. Consequently the slide and bolt maybe worked as freely as they could with only a common or stationary back.

In Fig. 8 the sliding back is moved back ward to the back edge of the box, bringing the small nibs on the slide 0 and bolt B into the lower notches of the sliding back, by which they are held firmly, and any effort to move the bolt or slide will be ineffectual so long as the sliding back remains in the position here shown.

In Fig. 7 we have the fastener brought to a high state of perfection for all ordinary purposes without any complication. In Fig. 8 we have the same fastener firmlylocked without any addition. But to make the lock convenient and desirable for all necessary purposes we have constructed not only one but a large number of keys, allof which are made upon the principle shown in Figs. 13, 14, 15, 16, and 17, each form varying a little in size from those here shown. To each of these keys we have fitted a sink or sinks in each of the corresponding numbers of the sliding backs. These sinks are made partly in the form of dovetails and are open in front or in the direction the key. needs to bear in unlocking the fastener. Consequently each key needs to fit perfectly. If a little too large, it will notenter. If too small, it may look the fastener, but not unlock it, as it will find nothing in that direction to bear against.

By referring to letters 0 and 0, Figs. 13 and 13, the form of the sink in that number of the sliding back with the form of the key belonging to it will be perfectly understood,

and so in each of the corresponding letters and numbers.

In Fig. 14 the key fits to each side of the center dovetail.

The form of each key in Figs. 15, 16, and 17 is such as to require (in some instances) two or more sinks in each corresponding number of the sliding back, as there shown. The key-sinks, grooves, and notches in the sliding backs may appear in the drawings as though they were cut entirely through; but we cast a web over them, in order to give sufficient strength. 1

In tittingthe sliding backs to the box We let the front end (letter T) down a little below the edge of the box; but we leave the back end (letter U) a little above, so that when the front edge of the box is screwed down as hard as it should be the back part will bear on the back part of the sliding back sufficiently to hold it in its proper place. Thus by turning the screws the sliding back maybe tightened or loosened, as desired. The tighter they are of course the more difficult to pick them. By raising the ribs F on the slide C, as shown in Fig. 1, as far as it will go the bolt B is drawn in even with the box. The motion downward is by their own weight.

Letter W in Fig. 1 shows the keyhole through which the keys pass to the sinks in the sliding backs. To lock or unlock the fastener, first be sure that the key is in the place design ed for it. Then press sufliciently by the hand to keep it there, and bear with the same hand in the opposite direction from which you wish the sliding back to go'if to lick the fastener, bear the hand toward the front edge of the lock; it to unlock it, bearin the opposite direction.

For blinds or swinging sash some expense may be saved by connecting the lower end of the slide 0 with a catch for that purpose and dispense with the bolt B; but here, however, an objection may sometimes arise, owing to the sagging of the blinds or sash; but by connecting the catch with the bolt B this objection is entirely obviated. The boltB should in this case connect with the longest cog or cam on the slide 0, so as to allow it to work freely by a pressure on the end, thus allow ing it to pass freely over the catch prepared for it. Here also a cheap form of the fastener may be made by dispensing with the slide 0, letting one or both of the nibs which are shown in Fig. 11 pass through the box for working the bolt. This description answers equally well for all sash as well as blinds; but this modification of the fastener is less perfect, and will not work as well as the bolt and slide together.

It will be seen that the lock as shown in the drawings is designed to bev screwed to the surface of the blinds, sash, or moldings. When desired, it may be let in even. In such case the slide 0 should work within the box, as shown in Figs. 8, 9, and 10.

When the slide and bolt are both usedin the fastener, a locking-nib or its equivalent may be used on only the bolt or slide, if desired. In Figs. 9 and 10 a nib is on only the slide 0; but in Figs. 7 and 8 they are on both the slide 0 and bolt B. It will be observed that either one will lock them both securely either up or down and for either hand.

Having thus fully described our invention and its utility, what we claim as new, and de sire to secure by Letters Patent, is

1. The constructing and arranging of the sliding back or backs L, in combination with stantially as herein described.

WM. E. ARNOLD. HOBART G. ARNOLD. In presence of- W. B. CARPENTER, DAVID LAING. 

